Here's the ruling from the Court of Appeals for the First Circuit [PDF]. One reason to take this seriously:

Notably, the panel included Judges Juan Torruella and Michael Boudin, both of whom are Republican appointees. Judge Boudin, who authored the opinion, is one of the most highly regarded judges in the country; he frequently sends his former law clerks to clerk for Supreme Court justices.

Legal reader reax always welcome. More soon.